3VS6

Crystal structure of HCK complexed with a pyrazolo-pyrimidine inhibitor tert-butyl {4-[4-amino-1-(propan-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-methoxyphenyl}carbamate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.373 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

A Pyrrolo-Pyrimidine Derivative Targets Human Primary AML Stem Cells in Vivo

Saito, Y.Yuki, H.Kuratani, M.Hashizume, Y.Takagi, S.Honma, T.Tanaka, A.Shirouzu, M.Mikuni, J.Handa, N.Ogahara, I.Sone, A.Najima, Y.Tomabechi, Y.Wakiyama, M.Uchida, N.Tomizawa-Murasawa, M.Kaneko, A.Tanaka, S.Suzuki, N.Kajita, H.Aoki, Y.Ohara, O.Shultz, L.D.Fukami, T.Goto, T.Taniguchi, S.Yokoyama, S.Ishikawa, F.

(2013) Sci Transl Med 5: 181ra52-181ra52

  • DOI: 10.1126/scitranslmed.3004387
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Leukemia stem cells (LSCs) that survive conventional chemotherapy are thought to contribute to disease relapse, leading to poor long-term outcomes for patients with acute myeloid leukemia (AML). We previously identified a Src-family kinase (SFK) memb ...

    Leukemia stem cells (LSCs) that survive conventional chemotherapy are thought to contribute to disease relapse, leading to poor long-term outcomes for patients with acute myeloid leukemia (AML). We previously identified a Src-family kinase (SFK) member, hematopoietic cell kinase (HCK), as a molecular target that is highly differentially expressed in human primary LSCs compared with human normal hematopoietic stem cells (HSCs). We performed a large-scale chemical library screen that integrated a high-throughput enzyme inhibition assay, in silico binding prediction, and crystal structure determination and found a candidate HCK inhibitor, RK-20449, a pyrrolo-pyrimidine derivative with an enzymatic IC50 (half maximal inhibitory concentration) in the subnanomolar range. A crystal structure revealed that RK-20449 bound the activation pocket of HCK. In vivo administration of RK-20449 to nonobese diabetic (NOD)/severe combined immunodeficient (SCID)/IL2rg(null) mice engrafted with highly aggressive therapy-resistant AML significantly reduced human LSC and non-stem AML burden. By eliminating chemotherapy-resistant LSCs, RK-20449 may help to prevent relapse and lead to improved patient outcomes in AML.


    Organizational Affiliation

    Laboratory for Human Disease Models, RIKEN Research Center for Allergy and Immunology, Yokohama, Kanagawa 230-0045, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein kinase HCK
A, B
454Homo sapiensMutation(s): 3 
Gene Names: HCK
EC: 2.7.10.2
Find proteins for P08631 (Homo sapiens)
Go to Gene View: HCK
Go to UniProtKB:  P08631
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
VSH
Query on VSH

Download SDF File 
Download CCD File 
A, B
tert-butyl {4-[4-amino-1-(propan-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-methoxyphenyl}carbamate
C20 H26 N6 O3
LVOBTCONHRNJJA-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
A, B
L-PEPTIDE LINKINGC9 H12 N O6 PTYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.373 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.230 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 74.613α = 90.00
b = 96.392β = 90.00
c = 182.125γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
ADSCdata collection
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-01
    Type: Initial release